When I haven't inputted any code, I keep getting an error:
"cannot load underlying module for UIKit"
I can clean and build, and it still runs, but why does the error appear and how do I get rid of it?
I had the same issue. I restarted Xcode and the error went away. Hope this is just as easy for you.
Related
My project worked fine, but after I changed to the last commit Xcode is showing me the strange error message:
Build service could not create build operation: unknown error while handling message: unknownSession
It indexes the files for a few hours and after that is finished the build fails also because of this strange bug.
I got this same error and closing Xcode, deleting derived data, and trying again fixed the issue for me.
I did not have to deleting the code or anything like that as mentioned in the other answer. Just deleting derived data.
For myself, I solved it by deleting the code from my pc completely and fetching it from my GitHub repository again. When I build now it works. The code has not changed but I guess Xcode has some strange bugs.
So I finished a React Native project and trying to get it into production mode. However, XCode is throwing me this error saying that it cannot find ExpoModulesProvider.swift
Here is the full error,
I have been trying to solve this error the past 2-3 hours. I searched everywhere however, I could't find anything related to this error. Even StackOverFlow doesn't have it.
Thank you
I had the same issue and in my case I solved it by removing the ExpoModulesProvider.swift source from Compile Sources
Trying to run the simulator on xCode version 10.1 and this error is appearing. Error
The error also appears here Code segment
I am unsure as to find and link this file, or even create it. Any help on this problem would be greatly appreciated.
Can someone please tell me what is wrong with this program?
I'm using swift and I'm trying to create an app which will give me values such as longitude/latitude etc. When I run the program, the build has 'succeeded' however, nothing prints to the logs or changes in the simulator.
However, the these are the errors that pop up.
Command /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1
and
Command /usr/bin/ditto failed with exit code 1
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Can someone please tell me what I need to do. I already added the CoreLocation framework too and imported it into my program.
I recently updated to Version 7.1 beta.
thanks in advance.
First, try to clean the project: Product > Clean, or empty the DerivedData folder.
Then if it's not fixed, this error happened to me when I use functions with ambiguous declaration (for example, using .Case instead of MyEnum.Case).
Edit your message by adding your code if the issue still occurs.
The error:
Error spawning child process: Permission denied
pops up in the console about one in every five or ten times that I try to run my project in the Xcode simulator. When this happens the project does not run.
Rerunning the project (Cmd-R again) usually works.
Can't find any mention of the error on Google, anyone experiencing this?
Edit 2014-07-04, getting this error too.
Running XCode 5.1
Cheers,
Paul
I had the same problem and after some Product -> Clean the message disappeared. So you should try that way!
I've had to do a clean build of the project and restart both the Xcode 5.1 and the iOS Simulator to solve the problem.
I had the same error. I removed a few lines of commented code, and cleaned the build, before compiling it again. Sounds crazy, but it worked.
Are you having any LLDB errors along with the "Error spawning child process" one?
I'd same issue with xcode5.1.1. Resolved by following steps.
Clean build
Change simulator selection to iPhone Retina 4 and Run , then back
to iPhone 3.5 screen, it works.